Disclaimer: I don't own RWBY or Guyver, RWBY is a creation of the late Monty Oum and is a product of Rooster Teeth while Guyver is a manga series created by Takaya Yoshiki.

This story is pretty much a project for me to try to make a RWBY fanfic. I'm fairly new to the RWBY fandom, and while I like it, I do feel that there are a few flaws with it. Generally, the pacing and not well thought out character development, at least from my viewpoint. Then again, the series does feel like a JRPG idea that got made into a cartoon instead.

Anyway, the idea of this story being a crossover is because I tend to prefer doing crossover stories, and I wanted to cross this series over with one of my favorite manga/anime series. At first, I thought about doing a RWBY/Gundam Iron Blooded Orphans story but somebody else is doing that and I didn't want to follow someone else's example.

So, I thought about another anime series I liked and Guyver came up, which felt like a much better choice as it is easier to include a character who can summon alien armor from another dimension than giant robots that tower over the Paladins and can easily punt them like an unimportant kid in a futuristic tank.

Plus, I have the option to make this story as bloody and gory as possible thanks to the Guyver and all its lethal weapons.

Now, I could go through the whole start from the beginning to introduce the characters and describe them, but I'm sure most of the readers will already know who is who. So, let's just fast forward to right around where Ruby, Weiss, Blake, Yang, Jaune, Pyrrha, Nora, and Ren reached the ruins.

The Strange Warrior Arrives

In front of the ruins in the Emerald Forest, eight teenagers stood before a giant black scorpion Grimm known as a Death Stalker while a giant black crow Grimm called a Nevermore circled around them from above.

"Great, the gangs all here," Yang start to say sarcastically. "Now, we can all die together," she added only for her sister, Ruby to pop up.

"Not if I can…Hey what's he doing!?" Ruby yelled in confusion as the Death Stalker turned its attention towards its right.

The eight teenagers looked to where the Grimm was looking to see something moving towards them from the shadows. What emerged from the shadows was a humanoid figure, but it didn't look like anything the teens had ever seen.

The figure had a teal blue shell-like armor that covered its human-like form. It had a single spike on top of its head. A metal orb on its forehead, two other orbs on the upper sides of its head, and two smaller orbs on top of each other in its mouth area. There were two holes on the sides of the two smaller orbs that blew out steam. On its forearms were a pair of short blades just below its elbows. There was another orb on the center of its waist. Its feet had two clawed toes on each foot. Underneath the hard-shell-like armor was some sort of dark organic material that looked like tendons.

"What in the world is that?" Weiss asked, not able to figure out what it was.

"Maybe it's a new type of Grimm," Jaune guessed.

"It's not black though," Blake pointed out.

Before anyone else could say anything, the Death Stalker rushed towards the new creature and struck at it with its pincers. None of the teens could see what had happened but they saw that the Death Stalker was struggling all the sudden. The next thing they knew, the Death Stalker let out a loud screech as its arms were ripped off its body.

"Whoa!" the teens shouted as the Death Stalker backed away to show the teal being holding the severed arms before throwing them away.

"Did that thing just…?" Jaune started to say but couldn't finish his sentence.

"Rip off the arms of a Death Stalker," Ren added with only a slight raise in his voice.

The Death Stalker wasn't about to give up as it struck at its foe with its stinger despite being to dissolve, but the teal humanoid moved forwards and plunged its right hand into its head, breaking its hard shell. The Death Stalker twitched for a moment as it completely dissolved before everyone.

"It took down the Death Stalker in one hit," Pyrrha commented in amazement.

"Eh…, I can do the same thing no problem," Yang dismissed the event like it was no big deal.

However, the teal creature wasn't done yet as it turned its attention towards the Nevermore flying overhead. The orb on its waist started to glow as started floating towards the air, much to everyone's surprise.

"It can fly," Blake said as she looked at the teal creature float higher into the air.

The Nevermore noticed the creature flying up towards it and tried to attack it. However, its new foe charged at it as the blades on its forearms lengthen and bend outwards. The Nevermore never knew what hit it as its head slid off its body as the two parts dissolved while in the air.

"That…is…so…AWESOME!" Ruby and Nora cheered.

"He down that Nevermore like it was nothing!" Ruby gushed over how this new creature defeated the Grimm.

"Ooh, we should ask him to join our team," Nora said as she turned to Ren. "Go ask him Ren," she told her partner, who isn't her romantic partner.

"Wait…what?" Ren replied in confusion as Nora started pushing him towards the teal being as it descended towards everyone.

"Are you insane!?" Weiss shouted as she tried to stop Nora. "We don't know anything about that thing or what it will do to us," she pointed out.

Once the creature touched the ground, it stood there looking at them with its glowing red slender eyes. Despite all eight teenagers being armed, the teal creature didn't make any moves against them as if it didn't see them as a threat. The red glow in the eyes started to fade as Ren was continued being pushed towards it by Nora.

"Wh-Where am I?" the teal being spoke in a male voice.

"It can talk!" Nora and Weiss shouted together. Nora in amazement while Weiss was in shock.

The teal being looked at the two girls in confusion as he tilted his head to the right.

"Of course, I can talk," the being told them before noticing its appearance. "Oh, I guess this would make that hard to believe," he said once he realized that he looked different from them.

What happened next shocked everyone as the teal armor removed itself from the being while the tendons vanished. The armor moved away to reveal a teenage boy with brown hair, wearing a red and black sweater and blue jeans. He looked about seventeen years old and, an average built and was generally plain looking.

Behind the boy, the armor floated for a moment before vanishing from everyone's sight.

Everyone's jaws dropped after seeing the armor vanish.

Then a very high-pitched squeal was heard as Ruby sprinted towards the boy and began to bombard him with questions.

"Thatwassocool! Wheredidyougetthatarmor? Didyoumakeit? Howdidyougetittoequipandremoveitself?" Ruby asked the confused teen boy as she had also somehow shrunk herself into what could best be described as a chibi.

The new boy didn't know what to say, mostly because he couldn't keep up with what this chibi shifting girl was saying. Luckily, he didn't have to worry about any more questions coming from this girl as the white-haired girl bopped her on the head, returning her to relative normalcy.

"Cut it out you dunce," Weiss scolded her partner before turning her attention back to the boy. "As for you, I would like it if you were to tell us what you are doing here, and where your partner is," she told the boy.

"I think it would be better if we at least introduced ourselves to each other first," Ren pointed out as he stood in front of the boy. "My name is Lie Ren," he introduced himself.

"My name is Sho Fukamachi," the boy introduced himself in return.

"I'm Nora!" Nora popped in to introduce herself.

"I'm Ruby," Ruby followed Nora's example.

"I am Weiss Schnee," Weiss introduced herself as the others went up to give Sho their names.

Once the introductions were done, Weiss asked Sho her previous questions.

"Well, I don't have a partner and honestly I just woke up seeing all of you," Sho told Weiss.

"Wait…you mean you don't remember fighting a Death Stalker and a Nevermore just a few minutes ago?" Yang asked in confusion.

"A what and a what?" Sho asked. "Are those new types of Zoanoids?" he asked another question.

"What's a Zoanoid?" Ruby asked, never hearing the word before.

"Maybe it's some sort of shape shifting monster that takes on a human form!" Nora shouted in excitement.

"That's ridiculous," Weiss rebutted.

While the two girls started to argue, Sho was thinking about what kind of situation he was in.

'How could they not know what a Zoanoid is?' Sho mentally asked himself. 'Ever since X-day, everyone on Earth knows about the Zoanoids and several of them had chosen to become Zoanoids,' he continued thinking. 'Then again, am I even on Earth?' he started to question himself as he looked at Pyrrha. 'Nobody on Earth dresses like her these days,' he noted before deciding to ask these teens a few questions of his own.

"Uh, stupid question but where are we?" Sho asked the assembled teens.

"Yeah, that is a stupid question," Yang agreed. "We're in the Emerald forest, going through our initiation exam remember," she told Sho.

"Right…" Sho replied as he thought about what else to ask. "And this exam is for…?" he started another question.

"To get admitted into Beacon Academy," Yang answered as she moved towards Sho. "Did you hit your head on something?" she asked.

"Well, since the last thing I remember was waking up to seeing all of you, I must have," Sho answered. "Wait, should you guys be finish your initiation exam?" he asked.

Four of the eight teens widened their eyes as they rushed towards the ruins to pick up the artifacts they needed to pass their exam. Ruby and Weiss selected the White Knight chess piece while Jaune and Pyrrha grabbed the white Rook chess piece.

"Aren't you going to grab a piece Sho?" Ruby asked the new teen.

"I don't have a partner, so I don't think I'll be able to pass this exam," Sho said, thinking that was the best excuse he could come up with.

"I'm sure it'll be fine," Ruby told Sho as she walked up to him. "Just pick a piece and then Ozpin can figure something out later," she added before dragging him towards the ruins to find a piece.

Sho looked at the remaining chess pieces in confusion, not quite sure what to make of them. He spotted a black pawn and decided to pick that one.

"A black pawn?" Blake noted in wonder.

"It just seems fitting for me," Sho said as he looked at the pawn. "It also sums up my life perfectly," he added bitterly as he remembered how he had been a pawn in many powerful men's quest for power, yet managing to become more powerful himself.

"Uh…guys," Jaune called out to everyone. "We got a problem," he said as he pointed behind him to show a large pack of Beowolves charging them.

Everyone was getting into defensive positions but Sho simply walked past them all. When he past Ruby, Sho gave her his chess piece before continuing to walk in front of them.

"Everyone, stay back," Sho told the eight teens.

"Stay back?" Yang questioned. "Why should I?" she continued angrily.

"I want to get this over with quickly," Sho told Yang.

"Then wouldn't it be a good idea for all of us to attack together?" Ren pointed out.

"This won't take long at all," Sho replied before taking a deep breath. "GUYVER!" he yelled causing a barrier to appear around him as the armor from before appeared behind him.

The other teens watched as the tendons shot out from the armor and wrapped around Sho's body before the armor placed itself on his being. It was a shocking and amazing sight for them all to see.

"What kind of Semblance is that?" Weiss asked in shock.

Nobody could give Weiss an answer since they never heard of a semblance that was like what they were seeing.

Sho on the other hand, grabbed his chest plates and opened them up.

"What is he doing?" Jaune asked as he kept his weapons ready.

"I do not know," Pyrrha replied as she and everyone watched as particles started to gather around Sho's chest area.

The Beowolves kept on charging towards Sho as if they deemed him to be a major threat. They weren't wrong in that aspect, but the creatures of Grimm had no idea just how much of a threat Sho Fukamachi was to them all. Three of the Beowolves leapt into the air and were practically on top of Sho.

"Sho!" Ruby screamed as she was about to rush to help her new friend.

However, the red hooded girl stopped in her tracks as a massive beam was fired from Sho's chest, vaporizing the Grimm as the particle beam continued to move forward, destroying the Grimm, trees, and whatever else was in its path before fading out of existence.

Ruby was stunned at how Sho single handedly wiped out all those Beowolves. Weiss's eyes were the size of dinner plates, she couldn't believe what she had just seen. Blake was shaking in terror at what she had just witnessed. Yang's jaw dropped at how Sho defeated the Grimm. Jaune landed on his butt due to his legs giving out. Pyrrha was stunned into silence at what just happened. Nora was cheering loudly at how Sho took down all the Grimm, and Ren was thinking what everyone assembled was thinking.

'What in the world is Sho?'

Sho closed his chest plates, blew out air before turning around to the rest of the teens. He recalled his armor, returning to his original form.

"I think we should leave now," Sho suggested.

Everyone nodded their heads in agreement before they all took off to finish their initiation exam.

The next day, the students that completed the initiation were going through the ceremony as Ozpin gave the names of the newly made four man teams and assigned the leaders for each team.

Off to the side stood Sho as he was not an actual initiate, as he had no official paper work. He thought back to how after leaving the forest, Sho and his acquaintances were stopped by Ozpin and his assistant, Glynda Goodwitch. After an awkward introduction, Sho was guided into Ozpin's office for a little chat.

FLASHBACK

Sho found himself sitting in an office that was styled after the inside of an old grandfather clock. Ozpin sat across from Sho, sipping his coffee.

"So, Mr. Fukamachi…" Ozpin began as he sized up the boy. "Care to explain to me, how you got into the Emerald Forest?" he asked.

"I honestly have no idea how I got there," Sho told Ozpin.

"I see," Ozpin said as he took out his scroll and placed it on his desk. "So, you have no recollection of this," he continued as he played a video feed from his scroll.

Sho looked at the strange device to see a rift open on the screen. His eyes widened when he saw himself appear while in his Guyver armor. He watched as his body stood there before an Ursa appeared and attacked him, only to be taken down with a single punch through its body.

"Taking down an Ursa with a single punch like that isn't uncommon," Ozpin told Sho. "But for you to do so without putting any of your Aura into it was surprising," he continued.

"Aura?" Sho replied, not understanding what Ozpin said.

Ozpin didn't say anything as he leaned forward to look into Sho's eyes. Sho in turn look straight back at Ozpin.

Compared to the people Sho had faced, Ozpin doesn't scare him.

Facing off against shape-shifting monsters and beings that were practically demi-gods was harder compared to a gray-haired man holding a coffee mug.

"You are not familiar with Aura," Ozpin stated, knowing that Sho had no idea.

"…No," Sho answered, not seeing any point to pretend to know what Ozpin was talking about.

"Perhaps it would be best if you explained to me what you do know," Ozpin suggested.

"It's a long story," Sho told Ozpin.

"I have plenty of time for a long story," Ozpin told Sho.

END OF FLASHBACK

'I told Ozpin about as much as I want him to know, but I'm pretty sure he knows I didn't tell him the whole truth,' Sho thought to himself as he watched as Ruby, Yang, Weiss, and Blake were being given their team name.

"From this day forth, you shall be known as Team RWBY," Ozpin declared.

'That's going to be confusing,' Sho thought to himself while chuckling a bit.

"Led by…Ruby Rose," Ozpin appointed the team leader, much to Ruby's shock and Weiss's dismay.

'I hope Ruby can handle being leader,' Sho thought to himself.

After he finished announcing the first-year teams, Ozpin turned to Sho, and signaled him to stand next to him.

"Lastly, I would like to present Sho Fukamachi," Ozpin told the assembled students. "He is a late entry, yet he has proven himself to be very capable," he said. "Which is why he shall serve as a reserve member until a new team could be formed or if some other event occurred," he added.

The first-year students muttered to themselves, wondering how Sho got special treatment or were doubting his abilities. The only ones that didn't doubt him was team RWBY and JNPR since they witnessed what Sho was capable of. Sho on the other hand, wasn't really interested in what Ozpin just said about him being a reserve member. If anything, Sho had no interest in being a huntsman like these students.

'I don't know where I am or if Tetsuro and Mizuki are even alive,' Sho thought sadly. 'I just hope that they are okay,' he added.

"This promises to be an interesting year," Ozpin said as the students slowly exited the auditorium. "Most interesting indeed," he added as he turned around to look at Sho.

In another part of Vale, four members of the White Fang surrounded a man in an alleyway. The man has short blonde hair and wore tan shirt and black slacks. The four faunas glared at the man behind their mask while the man simply stood there with a small smile on his face.

"It's amazing what kind of trash you find in a place like this," the man said as he looked over the White Fang members.

"Shut up human," the White Fang member with deer antlers said as he took out a sword. "You picked the wrong place to walk to," he added.

The man looked at the sword with an amused look on his face.

"I take it your companions share your opinion, right?" the man said.

None of the White Fang members said anything as the other three drew their weapons.

"I see…" the man said in a low tone. "Then, I guess that means that I can kill you four and simply claim it was self-defense," he added.

The four White Fang members laughed when they heard this man say that.

"Are you stupid?" the White Fang member with a beaver tail said. "We're armed and your defenseless," he pointed out.

"He's a human, they're all stupid," the White Fang member with a cat tail pointed out.

"I don't need to carry a weapon," the human said. "Not when I AM the weapon," he added with a chuckle. "Adapt," he said firmly as a bright flash appeared.

The White Fang members moved away as they watched a barrier appeared around the man, destroying a dumpster as this strange armor appeared and latched onto the human. The four faunus looked at the human in terror as he was replaced with this strange armored being.

"Now, let us begin," the armored man said as he walked towards the cowering faunas.

Author's note: Well that's the start of this story, could have been better but writing a RWBY story is new to me as I still don't feel like I have captured the feel of the RWBY universe just yet. Oh well, I'll just keep trying until it starts to feel natural to me.

Though I should point this out, I am NOT let Sho or that other guy that was literally just introduced thirteen paragraphs ago have Auras unlocked or Semblances. The reason is that would make them insanely overpowered, and the Guyver when equipped to a human is already overpowered from the start. More of that will be explained as the story goes on.

Either way, no Aura or Semblance for Sho or the mystery character (well a mystery to anyone who hasn't seen the Guyver anime or read the manga) because they don't need them.